Comparison

Fluids & Particle Simulation vs Gentle Timer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Fluids & Particle Simulation

Create mesmerizing, psychedelic fluid art with your fingertips. This app offers a calming and creative outlet to reduce stress and channel negative emotions into beautiful, flowing patterns. Enjoy a unique ASMR experience with sound-reactive visuals and customizable parameters.

Highlights
  • Interactive fluid art simulation
  • Sound-reactive fluids
  • Dozens of customizable parameters
  • Autopilot mode
  • Gyrosensor and haptic feedback integration
  • Real-time sound synthesis
  • Video recording and screenshot functionality
Read full description

Are you stressed and agitated? Do you want to channel your negative energies into something soulful and creatively free till you feel calm? The Fluids and Sounds app can help you - create satisfying, trippy and psychedelic art with your fingertips. This app helps you to reduce stress and calm down. Now you can touch on your screen to simulate colorful and luminescent fluids that flow with your touch movements. Create extraordinary patterns with single touch or multiple touches on the screen and delve deeper into a world of creative fascination and magical freedom till you feel the connection to our universe. --- Features of Fluids and Sounds --- - Wonderful and easy fluid art simulation - Sound reactive fluids (synchronize to your favorite music) - Dozens of parameters to play around with (color, bloom, sunrays, resolution, force and more) - Autopilot included. Let the fluids flow without interacting with the app. You also could stream this to a bigger screen using AirPlay. Please note: Autopilot is not generating sounds. - Gyrosensor, haptic feedback and force touch are integrated (if you want to use them) - Realtime sound synthesis for meditating music - Take screenshots and share them with anyone you like - Record videos of your fluids (please note: Videos are not including the fluid sounds, only the background music, also video recording excludes the UI, so you'll only record what matters - your art) - Save and load your favorite settings using presets --- Feel Free, Calm and Relaxed --- Art is a form of expression and expression helps in catharsis of inexplicable things we feel every day. If you think you suck at art or expression, this app offers you a safe, easy and creative outlet to channel your thoughts into wonderful art impressions that disappear intermittently. Allow yourself to come down and play around with Fluids & Shapes for some minutes to make beautiful expressions on your device’s screen. --- Seek Awareness and Peace --- You feel like the world is too overwhelming and you need to get a bit of awareness? Protect your peace from getting drowned in a pool of negative emotions such as stress, anxiety, agitation, depression etc. Seek awareness and peace the minute you open this app and make the most of your free time with this free, amazing app. --- Create Wonderful Fluid Art Impressions --- Use your fingertips to create wonderful forms and shapes on your device. While you do so, you can listen to relaxing music which is generated in realtime, depending on your input. Get in tune with the relaxing art and music as you make beautiful patterns on your screen. Customize the intensity, color dispersion, vortex index, music effects, waves and other items from the menu to enjoy a more personalized fluid art meditation and relaxation. Are you ready to feel the satisfaction of creative freedom and its impact on your mental wellbeing? The new fluid art meditation and stimulation app is here for you. Enjoy breathtaking art patterns and soulful music till you feel calm and relaxed. Download and use Fluids and Sounds today! Hope you'll enjoy, because we believe you deserve to feel calm and relaxed! Do you have ideas for new features or improvements? You are not satisfied with this app? Feel free to send me a message at info@mkgames.org Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Gentle Timer

This app helps children visualize time passing with a customizable image that gradually appears as a timer counts down. It's designed for calm routines like bedtime, naps, and getting ready, offering a screen-free, ad-free experience.

Highlights
  • Visual time countdown
  • Customizable images
  • Calm routine aid
  • Offline functionality
  • No ads or tracking
  • Optional end-of-timer sound
Features
Read full description

Bedtime battles. Morning meltdowns. The endless "five more minutes" argument. Kids fight time because they cannot see it. Gentle Timer lets them watch it pass. Set any duration. As the seconds tick down, an image you choose slowly appears beneath a soft fade. A favorite pet, a silly cousin, tomorrow's sunrise. Your child stops asking "is it done yet" and starts waiting for the picture to finish. Ideal for: • Sleep training early risers. Kids stay in bed until the picture finishes and morning is allowed. • Bedtime and naptime wind-downs without screens, songs, or stalling. • Brushing teeth, getting dressed, picking up toys. • Calming a toddler who has hit the wall. • Smoother transitions for children with autism or ADHD. • Helping preschoolers grasp how long five minutes really is. • Center time and quiet activities in classrooms. No bright colors. No loud alerts. No cartoon mascots screaming for attention. You pick the photo. You pick the song that plays at the end. The app stays out of your child's nervous system and out of your data. Fully offline. No ads. No accounts. No tracking. Try one calm timer today and watch the next routine go differently. Payment will be charged to your Apple ID at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions in your Account Settings on the App Store after purchase. Any unused portion of a free trial is forfeited when purchasing a subscription. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://BigBalli.com/privacy

Screenshots

Fluids & Particle Simulation4 screens
Gentle Timer3 screens

Verdict

The call

The clearest difference is ratings volume: Fluids & Particle Simulation at 776 against Gentle Timer's 1. Fluids & Particle Simulation also leads on device support (4 vs 2) and iOS requirement (13.0 vs 17.0). Gentle Timer's advantage is rating (5.0 vs 4.7). On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Fluids & Particle Simulation sells 8 in-app purchases, starting at $2.99 per 7 days and Gentle Timer sells 3 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Gentle Timer holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Fluids & Particle Simulation has 776 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on November 3, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
Fluids & Particle Simulation versus Gentle Timer: the parameters behind the verdict, then further details
ParameterFluids & Particle SimulationGentle Timer
PriceFreeFree
Rating4.7 (776 ratings)5.0 (1 ratings) — better
Positive reviews89.6% of reviews—
Number of ratings776 — better1
Update frequencyMonthlyMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS13.0 — better17.0
Further details — not scored
Size189 MB63 MB
Age rating4+4+
DeveloperZipoAppsBigBalli Consulting llc

Customer experience

Fluids & Particle Simulation

All ratings770 ratings
Positive94.2%
Neutral2.9%
Negative3.0%
Written reviews125 reviews
Positive89.6%
Neutral4.0%
Negative6.4%

Gentle Timer

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Fluids & Particle Simulation

Reported bugs

2 issues
  • Microphone input not working as expected
  • Difficulty resetting or restoring default settings

Requested features

4 requests
  • Ability to sync visuals with external audio/music
  • More preset options and visual effects
  • Improved UI/UX for settings and controls
  • Support for casting to external displays

Gentle Timer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

8 purchases

Fluids & Particle Simulation

Subscriptions3
  • Unlock all features3 Days trial$2.997 Days
  • Unlock all | monthly premium$5.991 Month
  • Fluids PRO$17.991 Year
One-time5
  • Unlock all Presets (iOS)$1.99
  • Unlock all Presets (OS X Mac)$2.99
  • Unlock all features$14.99
Show 2 more
  • Psychedelic magic (OS X Mac)$24.99
  • Psychedelic magic (iOS)$44.99
3 purchases

Gentle Timer

Subscriptions2
  • Weekly Subscription$0.997 Days
  • Monthly Subscription$3.991 Month
One-time1
  • Full Unlock$5.99

Questions

Is Fluids & Particle Simulation free?
Fluids & Particle Simulation is free to download, with in-app purchases available.
Is Gentle Timer free?
Gentle Timer is free to download, with in-app purchases available.
Which has better reviews, Fluids & Particle Simulation or Gentle Timer?
Gentle Timer is rated higher. Fluids & Particle Simulation averages 4.7 out of 5 from 776 ratings, while Gentle Timer averages 5.0 from 1 ratings.
Do Fluids & Particle Simulation or Gentle Timer have ads?
Neither Fluids & Particle Simulation nor Gentle Timer shows ads.
Which is updated more often, Fluids & Particle Simulation or Gentle Timer?
Fluids & Particle Simulation ships an update monthly, and Gentle Timer monthly. Most recently, Fluids & Particle Simulation was updated on November 3, 2026 and Gentle Timer on October 24, 2026.

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